X = int(input())

if 1800 <= X:
    print(1)
elif 1600 <= X:
    print(2)
elif 1400 <= X:
    print(3)
elif 1200 <= X:
    print(4)
elif 1000 <= X:
    print(5)
elif 800 <= X:
    print(6)
elif 600 <= X:
    print(7)
else:
    print(8) X = int(input()) X int(input()) int input() input if 1800 <= X:
    print(1)
elif 1600 <= X:
    print(2)
elif 1400 <= X:
    print(3)
elif 1200 <= X:
    print(4)
elif 1000 <= X:
    print(5)
elif 800 <= X:
    print(6)
elif 600 <= X:
    print(7)
else:
    print(8) 1800 <= X 1800 X print(1) print 1 elif 1600 <= X:
    print(2) 1600 <= X 1600 X print(2) print 2 elif 1400 <= X:
    print(3) 1400 <= X 1400 X print(3) print 3 elif 1200 <= X:
    print(4) 1200 <= X 1200 X print(4) print 4 elif 1000 <= X:
    print(5) 1000 <= X 1000 X print(5) print 5 elif 800 <= X:
    print(6) 800 <= X 800 X print(6) print 6 elif 600 <= X:
    print(7) 600 <= X 600 X print(7) print 7 print(8) print 8 X = int(input()) int(input()) X
X = int(input())

if 1800 <= X:
    print(1)
elif 1600 <= X:
    print(2)
elif 1400 <= X:
    print(3)
elif 1200 <= X:
    print(4)
elif 1000 <= X:
    print(5)
elif 800 <= X:
    print(6)
elif 600 <= X:
    print(7)
else:
    print(8)